One of the bystanders who helped to tackle Rojas as he tried to get away from his wrecked car tells Boston 25 News he knew right away Rojas was acting odd.

“There was something wrong with him. They think there's an assumption that he was drunk. I've worked in security for 25 years and again like you said I'm not a doctor as well, but I know what alcohol does, I've seen it for 25 years. That wasn't alcohol. I think at this point once he was placed in the car, I then walked down the street, went to see the damage he had caused and then after that point he was taken into custody.”

Rojas already has two prior convictions for DWI, and was discharged from the Navy in 2014 after a court martial.

Of the 22 other victims, four are in critical condition, two in serious condition at local hospitals Friday morning.